| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a freely flexible and elastic pipe which overcomes conventional problems that volume of a pipe for suction and a composite pipe is bulky and they cause inconvenience in storage and transportation because it is difficult to change their shapes during their use in accordance with original purpose or in the case where they are not used, reduces volume of the pipe for suction allowing simultaneous bidirectional feeding, and is advantageous for washing work of a deep part because feeding to one side is possible by a pipe having a low pressure while feeding in the reverse direction by a pipe having a high pressure. SOLUTION: Two belts made of a raw material suitable for the pipe are overlapped, and both sides thereof are joined to form a space in a central part. The prepared double beltlike object is further rolled spirally, and both ends thereof are joined to manufacture the pipe in which a main pipe is joined with a spiral pipe in order to manufacture the flexible and elastic pipe suitable for suction. Moreover, an extraction method in which the pipe is automatically and integrally manufactured by dissolving the raw material is possible.</p> |
